Earthquake · reviewed by a seismologist
M 2.5md
Earthquake near Corcoran, CA
No earthquake was likely felt in Corcoran in the 24 hours to 1:19 am PST (09:19 UTC). The last one was M 2.9, 8 km (5 mi) WNW, at 11:37 am PDT on 21 August 2026, estimated intensity II (weak) in town. Every earthquake near Corcoran
This page: a magnitude 2.5 earthquake was recorded 8 km (5 mi) west-southwest of Corcoran, CA, at 8:55 am PDT on 28 May 2021 (15:55 UTC), 15 km deep. 2 people have reported feeling it to USGS.
USGS: 8km WSW of Corcoran, CA
79 km (49 mi) S of Fresno, CA · 27 km (17 mi) S of Hanford, CA
- When
- 8:55 am PDT on 28 May 2021 ()
- Where
- 8 km (5 mi) west-southwest of Corcoran, CA · earthquakes near Corcoran
- Magnitude
- M 2.5 (md)
- Depth
- 15 km below the surface
- Felt
- 2 reports · strongest reported intensity I
- Nearest
- Kings County, 15 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1923 days ago
Earthquake alerts for Corcoran, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 16 km (10 mi) from the epicentre. In Corcoran, 8 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Corcoran 8 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
- Magna, Utah 2020 M 5.7 75,000× the energy of this one
- Around the size people start to feel M 3.0 6.7× the energy of this one
- This earthquake M 2.5 about 140 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 4.0 on 2018-11-27 — about 210 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.6 8 km SW of Huron, California · 46 km W of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 36.0828, -119.6477. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kings County, CA | 15 km (9 mi) | W | earthquakes near Kings County |
| Fresno County, CA | 75 km (47 mi) | N | earthquakes near Fresno County |
| Tulare County, CA | 79 km (49 mi) | ENE | earthquakes near Tulare County |
| San Luis Obispo County, CA | 106 km (66 mi) | SW | earthquakes near San Luis Obispo County |
| Kern County, CA | 117 km (72 mi) | SE | earthquakes near Kern County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.5 9km NNW of Avenal, CA
- 1.5 9km NNW of Avenal, CA
- 2.2 9km NNW of Avenal, CA
- 1.7 8km N of Kettleman City, CA
- 1.6 9km NW of Avenal, CA
- 1.8 21km SSE of Kettleman City, CA
- 1.6 22km SSE of Kettleman City, CA
- 1.8 21km SSE of Kettleman City, CA
- 1.6 14km SSE of Avenal, CA
- 1.7 12km N of Huron, CA
- 1.8 9km SSE of Huron, CA
- 2.3 17km SW of Corcoran, CA
- 2.2 5km NW of Avenal, CA
- 1.7 8km SSE of Kettleman City, CA
- 1.9 3km SW of Huron, CA
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.